Hi everyone I'm new to this forum and wondered if anyone could help me with a problem I am having. I have recently bought a Canon 550d to use for studio work, I'm not a professional at all. Before I used a Samsung GX-20 which was pretty easy to use. I have 2 Elinchrom D-lites and I used a Elinchrom Prolinca IR trigger to set my lights off. It was very easy to set up my camera so that the lights triggered once the Prolinca was put on to the hotshoe. Now I have the Canon 550D I cannot get the Prolinca to trigger off my lights at all. If I press the orange button on top of the trigger the lights flash but if I take a photo nothing happens. I don't know what to do to get them to flash and wondered if anyone out there could shed some light? I wondered if I may need to buy another trigger which is compatible for my Canon 550d and my Elinchrom D-lites. Many thanks in advance.